W_REQUEST       =   "\002"
W_REPLY         =   "\003"
W_HEARTBEAT     =   "\004"
W_DISCONNECT    =   "\005"

W_CLIENT_REG    =   "\006"
W_CLIENT_REQ    =   "\007"

W_SERVER_REG    =   "\008"
W_SERVER_REP    =   "\009"
W_SERVER_REP_CREG = "\001"
